[ATM] practical limits of 1 inch mirror

[David Weinshenker <daze39@earthlink.net>]

I note that Schott advertises "Borofloat" plate glass (fairly
similar in characteristics to Pyrex, but made by a "micro-float"
process) in large sheets - but only up to 1 inch thick.

Other than that, it looks like it would be excellent telescope-mirror
glass (and should certainly work quite nicely for mirrors at least
in the 6 to 10 inch range).

To what extent are larger diameter mirrors practical with 1 inch glass?

-dave w
_______________________________________________
ATM mailing list http://www.atmlist.net/